40558243 has 16 divisors (see below), whose sum is σ = 47309184. Its totient is φ = 34360960.

The previous prime is 40558241. The next prime is 40558283. The reversal of 40558243 is 34285504.

It is a cyclic number.

It is not a de Polignac number, because 40558243 - 2¹ = 40558241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40558241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18996 + ... + 21022.

It is an arithmetic number, because the mean of its divisors is an integer number (2956824).

Almost surely, 2^40558243 is an apocalyptic number.

40558243 is a deficient number, since it is larger than the sum of its proper divisors (6750941).

40558243 is a wasteful number, since it uses less digits than its factorization.

40558243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 40558243 is about 6368.5353889258. The cubic root of 40558243 is about 343.5788151290.

The spelling of 40558243 in words is "forty million, five hundred fifty-eight thousand, two hundred forty-three".